CA2440564C - Improvements in or relating to tube couplings - Google Patents
Improvements in or relating to tube couplings Download PDFInfo
- Publication number
- CA2440564C CA2440564C CA2440564A CA2440564A CA2440564C CA 2440564 C CA2440564 C CA 2440564C CA 2440564 A CA2440564 A CA 2440564A CA 2440564 A CA2440564 A CA 2440564A CA 2440564 C CA2440564 C CA 2440564C
- Authority
- CA
- Canada
- Prior art keywords
- coupling body
- end cap
- tube
- diaphragm
- coupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 162
- 238000010168 coupling process Methods 0.000 title claims abstract description 162
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 162
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000881 depressing effect Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
- F16L19/083—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping
- F16L19/086—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping with additional sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- External Artificial Organs (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The disclosure relates to a tube coupling comprising a coupling body having a throughway open at one end to receive an end portion of the tube and having an internal cam surface tapering towards the open end is which a collet is located for looking a tube in the coupling body by engagement with the tapered cam surface. The coupling body has a main body portion the throughway of which receives the end of the tube and a stop to limit the insertion of the collet and an end cap in screw threaded engagement with the main body having an open end into the throughway and the tapered cam surface. The cap is retained on the main body by an annular diaphragm encircling the body which engages in a wide slot formed in the inner periphery of the cap. The diaphragm snaps into the slot when the cap is screwed onto the main body portion to a first position in which a tube can be inserted through the collet into the coupling body and released. The diaphragm allows the cap to be screwed further onto the coupling body to a position in which the collet is locked to the tube to prevent release of the tube.
Description
IMPROVEMENTS IN OR RELATING TO TUBE COUPLINGS
This invention relates to tube couplings.
UK-A-1520742 discloses a "Speedfit " connector comprising a coupling body with a throughway open at one end and a tapered cam surface in the open end to receive a collet for locking a tube in the coupling. The collet is compressed against the tube by a slight withdrawal of the tube/collet from the coupling body which locks the tube in the coupling body. The collet can be depressed into the body to release the tube when required.
UK-A-2167147 discloses a"SuperSealTM" connector which is a modification of the "Speedfit" connector and has a separate sleeve screwed into the open end of the coupling body in which the tapered cam is formed. By screwing the sleeve into the coupling body the gripping action of the collet on the tube is increased. Also the collet becomes locked up in the coupling body and cannot be depressed to release the tube. The tube is then permanently locked in the coupling body.
EP-P,,-0945662 discloses a tube coupling having both "Speedfit R" and "SuperSeal " modes of operation. More particularly the coupling comprises a coupling body having a throughway open at one end to receive an end portion of a tube and having an internal cam surface tapering towards the open end in which a collet is located for locking the tube in the coupling body by engagement with the tapered cam surface and having stop means to limit entry of the collet into the throughway. The coupling body has a main portion, the throughway of which receives the end of the tube and contains said stop means to limit insertion of the collet and an end cap in screw threaded engagement with the main body. The end cap provides said open end to the throughway and the tapered cam surface. Indexing means are provided between the end cap and the main body to define different positions of rotation of adjustment in the first of which the tube can be inserted in and by depressing the collet into the coupling body, released in the coupling body (i.e. "Speedfit " mode) and in the second of which the collet is engaged with the stop means to prevent the collet being depressed into the coupling body to release the tube (i.e. "SuperSealTM" mode).
There is a need to provide an alternative construction to achieve both "Speedfit " and "SuperSealTM" functions whilst simplifying manufacture and assembly.
This invention provides a tube coupling comprising: a coupling body having a throughway open at one end, at least a portion of the throughway being adapted to receive a tube; an end cap in screw-threaded engagement with the coupling body to move between initial and advanced positions along the coupling body and having an opening for the tube and an internal tapering cam surface;
a collet at least partially disposed in the end cap engaging the cam surface to lock the tube in the cap with movement of the collet outwardly of the cap and to release the tube when depressed inwardly of the cap; stop means in the coupling body for limiting movement of the collet inwardly of the end cap, the initial position of the end cap on the coupling body allowing the tube to be inserted and locked in the end cap by the collet and to be released by depressing the collet inwardly of the end cap and the advanced position of the end cap holding the collet adjacent the stop means in the coupling body to prevent release of the tube; and detent means acting between the end cap and coupling body for providing resistance to movement of the end cap along the coupling body until the end cap reaches said initial position on the coupling body and to allow said further movement of the end cap to the advanced position, the detent means comprising a flexible diaphragm encircling one of the coupling body and the end cap and an annular slot in the other of the end cap and coupling body in which the diaphragm is snap engaged in said initial position of the end cap on the coupling body, the slot having a width which accommodates the travel of the end cap along the coupling body.
This invention relates to tube couplings.
UK-A-1520742 discloses a "Speedfit " connector comprising a coupling body with a throughway open at one end and a tapered cam surface in the open end to receive a collet for locking a tube in the coupling. The collet is compressed against the tube by a slight withdrawal of the tube/collet from the coupling body which locks the tube in the coupling body. The collet can be depressed into the body to release the tube when required.
UK-A-2167147 discloses a"SuperSealTM" connector which is a modification of the "Speedfit" connector and has a separate sleeve screwed into the open end of the coupling body in which the tapered cam is formed. By screwing the sleeve into the coupling body the gripping action of the collet on the tube is increased. Also the collet becomes locked up in the coupling body and cannot be depressed to release the tube. The tube is then permanently locked in the coupling body.
EP-P,,-0945662 discloses a tube coupling having both "Speedfit R" and "SuperSeal " modes of operation. More particularly the coupling comprises a coupling body having a throughway open at one end to receive an end portion of a tube and having an internal cam surface tapering towards the open end in which a collet is located for locking the tube in the coupling body by engagement with the tapered cam surface and having stop means to limit entry of the collet into the throughway. The coupling body has a main portion, the throughway of which receives the end of the tube and contains said stop means to limit insertion of the collet and an end cap in screw threaded engagement with the main body. The end cap provides said open end to the throughway and the tapered cam surface. Indexing means are provided between the end cap and the main body to define different positions of rotation of adjustment in the first of which the tube can be inserted in and by depressing the collet into the coupling body, released in the coupling body (i.e. "Speedfit " mode) and in the second of which the collet is engaged with the stop means to prevent the collet being depressed into the coupling body to release the tube (i.e. "SuperSealTM" mode).
There is a need to provide an alternative construction to achieve both "Speedfit " and "SuperSealTM" functions whilst simplifying manufacture and assembly.
This invention provides a tube coupling comprising: a coupling body having a throughway open at one end, at least a portion of the throughway being adapted to receive a tube; an end cap in screw-threaded engagement with the coupling body to move between initial and advanced positions along the coupling body and having an opening for the tube and an internal tapering cam surface;
a collet at least partially disposed in the end cap engaging the cam surface to lock the tube in the cap with movement of the collet outwardly of the cap and to release the tube when depressed inwardly of the cap; stop means in the coupling body for limiting movement of the collet inwardly of the end cap, the initial position of the end cap on the coupling body allowing the tube to be inserted and locked in the end cap by the collet and to be released by depressing the collet inwardly of the end cap and the advanced position of the end cap holding the collet adjacent the stop means in the coupling body to prevent release of the tube; and detent means acting between the end cap and coupling body for providing resistance to movement of the end cap along the coupling body until the end cap reaches said initial position on the coupling body and to allow said further movement of the end cap to the advanced position, the detent means comprising a flexible diaphragm encircling one of the coupling body and the end cap and an annular slot in the other of the end cap and coupling body in which the diaphragm is snap engaged in said initial position of the end cap on the coupling body, the slot having a width which accommodates the travel of the end cap along the coupling body.
The arrangement removes the cams from both the cap and body.
Instead, in a preferred embodiment the body has a thin, flexible, flange or "diaphragm" protruding radially from the body's outside diameter. The cap has an internal slot, similar to a circlip groove. As the cap is assembled onto the body the cap butts against the diaphragm and bends away as the cap passes beyond.
Thereafter, the diaphragm snaps into the groove but due to the groove's major diameter cannot flex back to its original position - it is always bent in the direction opposing any removal of the cap from the body.
With this arrangement the diaphragm is snap engaged in the slot with longitudinal movement of the cap along the body. The cap's position is constrained lengthwise by the end of the cap butting against the large inflexible flange on the body or by the flexible diaphragm opposing and butting against the end of the groove in the cap.
A further feature of the arrangement is that the slot or groove in the cam is tapered towards the open end of the cap. This taper allows the diaphragm to expand as the cap is screwed further onto the body thereby reducing friction between the two and providing the user with better tactile feed back. This encourages the user to maintain the two preferred positions for the cap in use:
either extreme for "Speedfit " or "SuperSealTM" are not somewhere in between.
Preferably, stop means are provided for acting between the cap and main body portion limiting the extent to which the cap can be screwed onto the body portion to define the second position of the cap on the body portion.
Instead, in a preferred embodiment the body has a thin, flexible, flange or "diaphragm" protruding radially from the body's outside diameter. The cap has an internal slot, similar to a circlip groove. As the cap is assembled onto the body the cap butts against the diaphragm and bends away as the cap passes beyond.
Thereafter, the diaphragm snaps into the groove but due to the groove's major diameter cannot flex back to its original position - it is always bent in the direction opposing any removal of the cap from the body.
With this arrangement the diaphragm is snap engaged in the slot with longitudinal movement of the cap along the body. The cap's position is constrained lengthwise by the end of the cap butting against the large inflexible flange on the body or by the flexible diaphragm opposing and butting against the end of the groove in the cap.
A further feature of the arrangement is that the slot or groove in the cam is tapered towards the open end of the cap. This taper allows the diaphragm to expand as the cap is screwed further onto the body thereby reducing friction between the two and providing the user with better tactile feed back. This encourages the user to maintain the two preferred positions for the cap in use:
either extreme for "Speedfit " or "SuperSealTM" are not somewhere in between.
Preferably, stop means are provided for acting between the cap and main body portion limiting the extent to which the cap can be screwed onto the body portion to define the second position of the cap on the body portion.
More specifically, the stop means comprise a raised abutment vn the main body portion located in the path of the cap as it is screwed onto the body portion to be engaged by the cap when the cap reaches its.second position on the body portion.
In the latter arrangement, the raised abutment on the coupling body portion may be an annular abutment which is engageable with the leading end of the cap as the cap is screwed onto the coupling body.
in any of the above arrangements, the detent means acting between the cap and coupling body may comprise a radially outwardly projecting detent formed an the coupling body engageable with a slot formed in a cap.
More specifically, the detent may comprise an annular resilient diaphragm prajecting radially outwardly af the coupling body and the:cap may have an annular slot encircling an inner side of the cap in which th annular flange is engageable, the slot having a width sufficient to allow the cap to move between said first position in which the flange is located at one end of the slot and prevents the cap from wi,thdrawal from the coupling body and said second poeition in which the flange is located towards the other end of the slot.
By way of example the annular slot may be spaced away from the leading end of the cap in the direction in which the cap is located on the coupling body and a portion of the cap between the slot and under the cap may be ada.pted to deflect the flange as the cap is screwed onto the coupling body until the flange reaches and snaps into the slot.
In the latter case the slot and the flange may be dimensioned so that the flange is held in the slot bent over t'vwards the leading end of the cap so that when the cap is unscrewed from the second position to the first position, the flange will engage the end of the slot in the first position and resists further withdrawal of the cap from the coupling body.
Furthermore, the bottom of the slot may converge with the coupling 5 body towards the leading end of the cap so that as the cap is screwed onto the coupling body to the first and second positions, the extent to which the flange is deflected by engagement with the bottom of the slot reduces.
In some embodiments, the diaphragm comprises a series of segments extending around the coupling body.
In some embodiments, the annular diaphragm is formed on a separate insert ring mounted on the coupling body. The insert ring may comprise a split ring mounted in a groove in the coupling body.
In some embodiments, the stop means in the coupling body to restrict movement of the collet when depressed into the coupling body comprises a sealing arrangement located in the coupling body. The sealing arrangement may comprise a spacer ring encircling the throughway in the coupling body and an 0-ring seal located between the spacer ring and a shoulder formed in the throughway, the inner end of the collet being engageable with the spacer ring to restrict entry of the collet into the coupling body.
Also according to the present invention, there is provided a tube coupling comprising: a coupling body having a throughway open at a first end;
a tubular end cap in screw-threaded engagement with the first end of the coupling body, the end cap being selectively movable between an initial position and an advanced position along the coupling body, the end cap having an interior surface comprising a tapering cam surface; a collet at least partially disposed in the end cap so as to selectively bias against the tapering cam surface of the end cap;
a stop disposed in the coupling body, the stop restricting advancement of the collet into the end cap when the end cap is in the advanced position; a flexible diaphragm extending between the coupling body and the end cap, the flexible diaphragm encircling one of the coupling body and the end cap; and an annular 5a slot in the other of the end cap and coupling body in which the diaphragm is disposed when the end cap is in the initial position, the slot having a width which accommodates the travel of the end cap along the coupling body.
The following is a description of some specific embodiments of the invention, reference being made to the accompanying drawings in which:
Figure 1 is a cross-sectional view of a tube coupling in accordance with an embodiment of the invention including a tube inserted in the coupling;
Figure 2 is a detailed view of part of a coupling body of the tube coupling;
Figure 3 is a cross-sectional view through part of the tube coupling showing a cap on the coupling body in the first "Speedfit " position;
Figure 4 is a cross-sectional view through part of the coupling body showing the cap in the second "SuperSealTM" position; and Figure 5 shows a modified form of the end cap of the coupling body.
Referring firstly to Figure 1 of the drawings, there is shown a moulded plastics tube coupling indicated generally by reference numeral 10 having a throughway 11 open at one end 12 to receive an end portion of a tube 13. The coupling .6.
comprises a main body 1oa and an end cap l0b screwed onto the main body as described below. ' At a location spaced from the open end, the throughway in the main body has a first increase in diameter at a step 14 to provide an enlarged bore 15 in which the end of the tube 13 is a close sliding fit with the end of the tube engaging the stgp 14. The throughway has'a further increase in diameter at a step 16 to form a further enlarged bore 17 in which an ~or ring seal, 18 is located against the stev followed by a spacer washer or compression ring 19.
The main body 1oa has an external screw-threaded 9ection 20 extending from one end of the body followed by a reduced diameter plain eection 21 in which a detent is formed as described later and followed in tuxn by an integral encircling radial flange 22. The flange 22 has an abutment face 23 to provide an end stop for the cap when Lhe latzer is Pully screwed onto the coupling body as described below. The end cap lbb of the coupling body encircles the main body and has an internal feature for engaging with the detent on the main body portion again as described later.
A collet indicated at 25 is mounted in the open end of the coupling body comprising an annular member 26 and resilient arms 27 projecting from the annular member into the throughway of the coupling body and terminating in heads 28. The heads of the collet engage in a tapered cam surface 29 convexging towards the end oà the coupling body to be compressed against the tube 13 by engagement of the heads with the cam surface to lock the tube in the coupling body.
Reference is now made zo Figure 2 of the dxawings which is a crosa-sectional view through paxt of the main body portion 10a. Between the end of the screw threaded section 20 on the main body and the flange 22 there is an upstanding annular flexible diaphragm 30 formed integrally with the body. The diaphragm forms part of the detent arrangement referred to above for engaging with and locking the cap on the body as described later.
Turning now to Figure 3 of the drawings, the end cap lOb is shown partially screwed onto the body to an initial position in which the collet in the cap receives and holds a tube in the coupling body in the "Speedfit's manner. That is to say, the tube is locked in the coupling body but can be released by depressing the collet into the coupling body to release the gripping engagement of the collet with the tube and allow the tube to be withdrawn.
The end cap l0a has a mouth 31 with a lip around the inner periphery of the mouth. The inner side 34 of the end cap has an encircling slot 35 adjacent the mouth, in which the annular diaphragm 30 is snap engageable. The mouth of the cap has a bevelled entry indicated at 36 to assist in deforming the diaphragm inwardly as the cap is screwed onto the body and the diaphragm is forced through the mouth of the cap. The diameter of the lip at the mouth of the cap at the entry is less than the diameter of the diaphragm but is slightly greater than the rest of the inner diameter of the cap to facilitate entry of the diaphragm into the slot.
Screwing the cap onto the body causes the diaphragm to snap into the slot 35 at the end nearest the mouth 31 of the cap. The cap is then located in the first "Speedfi~' position referred to above. The bottom wall 37 of the slot is tapered to reduce in diameter towards the open end of the cap so that the diaphragm is held bent over towards the side of the slot adjacent the mouth of the slot. Thus, the diaphragm is trapped in the corner formed between the bottom wall of the slot and the side wall of the slot when the cap is rotated in a direction to withdraw from the main body to prevent withdrawal of the cap from the main body portion beyond the first position.
As the cap is screwed further onto the body, the diaphragm rides up the tapering undercut of the bottom wall of the slot in the cap relaxing the diaphragm slightly, and therefore reducing the resistance to rotation of the cap.
The cap can then be screwed onto the body until it engages the upstanding end flange 22 of the coupling body as indicated in Figure 4 in which the cap is in the second or "SuperSealTM" position. The collet is then held in engagement with the end stop in the coupling body and cannot be depressed to allow a tube to be released from the coupling body. In some embodiments, the end stop may comprise a sealing arrangement located in the coupling body. In one embodiment, as illustrated in Figure 4, the sealing arrangement comprises the spacer ring 19 encircling the throughway in the coupling body and the "0" ring seal 18 located between the spacer ring and a shoulder formed in the throughway.
The inner end or head 28 of the collet 25 is engageable with the spacer ring 19 to restrict entry of the collet into the coupling body.
The arrangement thus provides a tube coupling body which is readily assembled and which provides both "Speedfit " and SuperSealTM" functions without unduly stressing the components of the body.
A number of further embodiments in the invention are also envisaged as follows:
This design can also be used on metal coupling bodies or rigid plastic coupling bodies in which case the flexible diaphragm could be formed on a separate insert ring mounted to the coupling body. In one implementation, the flexible diaphragm could be moulded on a separate split ring which is assembled into a groove or recess on the body between the thread and the large flange so that the detent engages in the slot on the cap.
Equally the separate split ring could be mounted in the cap with the flexible diaphragm projecting radially inwardly to engage in a slot in the main body portion. The slot in the body portion would be located between the thread and the large flange. Again, the slot in the body could be tapered in diameter.
In all of the designs above the diaphragm could be interrupted once or several times to allow for tooling or to allow the diaphragm's resilient/flexible characteristics to be optimized. For example, the diaphragm may comprise a series of segments extending around the coupling body.
In accordance with a further modification, an enlarged groove 40 is formed at the end of the slot remote from the open end of the cap as illustrated in Figure 5. When the cap is rotated provisionally to move the diaphragm into this position, the cap is in a non-load imposing position and thereby allows easy threading.
In the latter arrangement, the raised abutment on the coupling body portion may be an annular abutment which is engageable with the leading end of the cap as the cap is screwed onto the coupling body.
in any of the above arrangements, the detent means acting between the cap and coupling body may comprise a radially outwardly projecting detent formed an the coupling body engageable with a slot formed in a cap.
More specifically, the detent may comprise an annular resilient diaphragm prajecting radially outwardly af the coupling body and the:cap may have an annular slot encircling an inner side of the cap in which th annular flange is engageable, the slot having a width sufficient to allow the cap to move between said first position in which the flange is located at one end of the slot and prevents the cap from wi,thdrawal from the coupling body and said second poeition in which the flange is located towards the other end of the slot.
By way of example the annular slot may be spaced away from the leading end of the cap in the direction in which the cap is located on the coupling body and a portion of the cap between the slot and under the cap may be ada.pted to deflect the flange as the cap is screwed onto the coupling body until the flange reaches and snaps into the slot.
In the latter case the slot and the flange may be dimensioned so that the flange is held in the slot bent over t'vwards the leading end of the cap so that when the cap is unscrewed from the second position to the first position, the flange will engage the end of the slot in the first position and resists further withdrawal of the cap from the coupling body.
Furthermore, the bottom of the slot may converge with the coupling 5 body towards the leading end of the cap so that as the cap is screwed onto the coupling body to the first and second positions, the extent to which the flange is deflected by engagement with the bottom of the slot reduces.
In some embodiments, the diaphragm comprises a series of segments extending around the coupling body.
In some embodiments, the annular diaphragm is formed on a separate insert ring mounted on the coupling body. The insert ring may comprise a split ring mounted in a groove in the coupling body.
In some embodiments, the stop means in the coupling body to restrict movement of the collet when depressed into the coupling body comprises a sealing arrangement located in the coupling body. The sealing arrangement may comprise a spacer ring encircling the throughway in the coupling body and an 0-ring seal located between the spacer ring and a shoulder formed in the throughway, the inner end of the collet being engageable with the spacer ring to restrict entry of the collet into the coupling body.
Also according to the present invention, there is provided a tube coupling comprising: a coupling body having a throughway open at a first end;
a tubular end cap in screw-threaded engagement with the first end of the coupling body, the end cap being selectively movable between an initial position and an advanced position along the coupling body, the end cap having an interior surface comprising a tapering cam surface; a collet at least partially disposed in the end cap so as to selectively bias against the tapering cam surface of the end cap;
a stop disposed in the coupling body, the stop restricting advancement of the collet into the end cap when the end cap is in the advanced position; a flexible diaphragm extending between the coupling body and the end cap, the flexible diaphragm encircling one of the coupling body and the end cap; and an annular 5a slot in the other of the end cap and coupling body in which the diaphragm is disposed when the end cap is in the initial position, the slot having a width which accommodates the travel of the end cap along the coupling body.
The following is a description of some specific embodiments of the invention, reference being made to the accompanying drawings in which:
Figure 1 is a cross-sectional view of a tube coupling in accordance with an embodiment of the invention including a tube inserted in the coupling;
Figure 2 is a detailed view of part of a coupling body of the tube coupling;
Figure 3 is a cross-sectional view through part of the tube coupling showing a cap on the coupling body in the first "Speedfit " position;
Figure 4 is a cross-sectional view through part of the coupling body showing the cap in the second "SuperSealTM" position; and Figure 5 shows a modified form of the end cap of the coupling body.
Referring firstly to Figure 1 of the drawings, there is shown a moulded plastics tube coupling indicated generally by reference numeral 10 having a throughway 11 open at one end 12 to receive an end portion of a tube 13. The coupling .6.
comprises a main body 1oa and an end cap l0b screwed onto the main body as described below. ' At a location spaced from the open end, the throughway in the main body has a first increase in diameter at a step 14 to provide an enlarged bore 15 in which the end of the tube 13 is a close sliding fit with the end of the tube engaging the stgp 14. The throughway has'a further increase in diameter at a step 16 to form a further enlarged bore 17 in which an ~or ring seal, 18 is located against the stev followed by a spacer washer or compression ring 19.
The main body 1oa has an external screw-threaded 9ection 20 extending from one end of the body followed by a reduced diameter plain eection 21 in which a detent is formed as described later and followed in tuxn by an integral encircling radial flange 22. The flange 22 has an abutment face 23 to provide an end stop for the cap when Lhe latzer is Pully screwed onto the coupling body as described below. The end cap lbb of the coupling body encircles the main body and has an internal feature for engaging with the detent on the main body portion again as described later.
A collet indicated at 25 is mounted in the open end of the coupling body comprising an annular member 26 and resilient arms 27 projecting from the annular member into the throughway of the coupling body and terminating in heads 28. The heads of the collet engage in a tapered cam surface 29 convexging towards the end oà the coupling body to be compressed against the tube 13 by engagement of the heads with the cam surface to lock the tube in the coupling body.
Reference is now made zo Figure 2 of the dxawings which is a crosa-sectional view through paxt of the main body portion 10a. Between the end of the screw threaded section 20 on the main body and the flange 22 there is an upstanding annular flexible diaphragm 30 formed integrally with the body. The diaphragm forms part of the detent arrangement referred to above for engaging with and locking the cap on the body as described later.
Turning now to Figure 3 of the drawings, the end cap lOb is shown partially screwed onto the body to an initial position in which the collet in the cap receives and holds a tube in the coupling body in the "Speedfit's manner. That is to say, the tube is locked in the coupling body but can be released by depressing the collet into the coupling body to release the gripping engagement of the collet with the tube and allow the tube to be withdrawn.
The end cap l0a has a mouth 31 with a lip around the inner periphery of the mouth. The inner side 34 of the end cap has an encircling slot 35 adjacent the mouth, in which the annular diaphragm 30 is snap engageable. The mouth of the cap has a bevelled entry indicated at 36 to assist in deforming the diaphragm inwardly as the cap is screwed onto the body and the diaphragm is forced through the mouth of the cap. The diameter of the lip at the mouth of the cap at the entry is less than the diameter of the diaphragm but is slightly greater than the rest of the inner diameter of the cap to facilitate entry of the diaphragm into the slot.
Screwing the cap onto the body causes the diaphragm to snap into the slot 35 at the end nearest the mouth 31 of the cap. The cap is then located in the first "Speedfi~' position referred to above. The bottom wall 37 of the slot is tapered to reduce in diameter towards the open end of the cap so that the diaphragm is held bent over towards the side of the slot adjacent the mouth of the slot. Thus, the diaphragm is trapped in the corner formed between the bottom wall of the slot and the side wall of the slot when the cap is rotated in a direction to withdraw from the main body to prevent withdrawal of the cap from the main body portion beyond the first position.
As the cap is screwed further onto the body, the diaphragm rides up the tapering undercut of the bottom wall of the slot in the cap relaxing the diaphragm slightly, and therefore reducing the resistance to rotation of the cap.
The cap can then be screwed onto the body until it engages the upstanding end flange 22 of the coupling body as indicated in Figure 4 in which the cap is in the second or "SuperSealTM" position. The collet is then held in engagement with the end stop in the coupling body and cannot be depressed to allow a tube to be released from the coupling body. In some embodiments, the end stop may comprise a sealing arrangement located in the coupling body. In one embodiment, as illustrated in Figure 4, the sealing arrangement comprises the spacer ring 19 encircling the throughway in the coupling body and the "0" ring seal 18 located between the spacer ring and a shoulder formed in the throughway.
The inner end or head 28 of the collet 25 is engageable with the spacer ring 19 to restrict entry of the collet into the coupling body.
The arrangement thus provides a tube coupling body which is readily assembled and which provides both "Speedfit " and SuperSealTM" functions without unduly stressing the components of the body.
A number of further embodiments in the invention are also envisaged as follows:
This design can also be used on metal coupling bodies or rigid plastic coupling bodies in which case the flexible diaphragm could be formed on a separate insert ring mounted to the coupling body. In one implementation, the flexible diaphragm could be moulded on a separate split ring which is assembled into a groove or recess on the body between the thread and the large flange so that the detent engages in the slot on the cap.
Equally the separate split ring could be mounted in the cap with the flexible diaphragm projecting radially inwardly to engage in a slot in the main body portion. The slot in the body portion would be located between the thread and the large flange. Again, the slot in the body could be tapered in diameter.
In all of the designs above the diaphragm could be interrupted once or several times to allow for tooling or to allow the diaphragm's resilient/flexible characteristics to be optimized. For example, the diaphragm may comprise a series of segments extending around the coupling body.
In accordance with a further modification, an enlarged groove 40 is formed at the end of the slot remote from the open end of the cap as illustrated in Figure 5. When the cap is rotated provisionally to move the diaphragm into this position, the cap is in a non-load imposing position and thereby allows easy threading.
Claims (18)
1. A tube coupling comprising:
a coupling body having a throughway open at one end, at least a portion of the throughway being adapted to receive a tube;
an end cap in screw-threaded engagement with the coupling body to move between initial and advanced positions along the coupling body and having an opening for the tube and an internal tapering cam surface;
a collet at least partially disposed in the end cap engaging the cam surface to lock the tube in the cap with movement of the collet outwardly of the cap and to release the tube when depressed inwardly of the cap;
stop means in the coupling body for limiting movement of the collet inwardly of the end cap, the initial position of the end cap on the coupling body allowing the tube to be inserted and locked in the end cap by the collet and to be released by depressing the collet inwardly of the end cap and the advanced position of the end cap holding the collet adjacent the stop means in the coupling body to prevent release of the tube; and detent means acting between the end cap and coupling body for providing resistance to movement of the end cap along the coupling body until the end cap reaches said initial position on the coupling body and to allow said further movement of the end cap to the advanced position, the detent means comprising a flexible diaphragm encircling one of the coupling body and the end cap and an annular slot in the other of the end cap and coupling body in which the diaphragm is snap engaged in said initial position of the end cap on the coupling body, the slot having a width which accommodates the travel of the end cap along the coupling body.
a coupling body having a throughway open at one end, at least a portion of the throughway being adapted to receive a tube;
an end cap in screw-threaded engagement with the coupling body to move between initial and advanced positions along the coupling body and having an opening for the tube and an internal tapering cam surface;
a collet at least partially disposed in the end cap engaging the cam surface to lock the tube in the cap with movement of the collet outwardly of the cap and to release the tube when depressed inwardly of the cap;
stop means in the coupling body for limiting movement of the collet inwardly of the end cap, the initial position of the end cap on the coupling body allowing the tube to be inserted and locked in the end cap by the collet and to be released by depressing the collet inwardly of the end cap and the advanced position of the end cap holding the collet adjacent the stop means in the coupling body to prevent release of the tube; and detent means acting between the end cap and coupling body for providing resistance to movement of the end cap along the coupling body until the end cap reaches said initial position on the coupling body and to allow said further movement of the end cap to the advanced position, the detent means comprising a flexible diaphragm encircling one of the coupling body and the end cap and an annular slot in the other of the end cap and coupling body in which the diaphragm is snap engaged in said initial position of the end cap on the coupling body, the slot having a width which accommodates the travel of the end cap along the coupling body.
2. A tube coupling as claimed in claim 1, wherein the coupling body has an external screw-threaded portion extending along the coupling body from said one end and the end cap has an open mouth to encircle the coupling body and a screw-threaded portion extending from a location adjacent the open mouth internally along the end cap to engage with the screw-threaded portion on the coupling body.
3. A tube coupling as claimed in claim 2, wherein the detent means are provided on the coupling body adjacent the end of the screw-thread remote from said open end of the coupling body and within the end cap between the screw-thread and mouth of the end cap.
4. A tube coupling as claimed in claim 2 or 3, wherein the diaphragm is formed on the coupling body and the mouth of the end cap is formed with an inturned lip providing a restricted opening of smaller diameter than the outer diameter of the diaphragm and with the annular slot encircling the inner side of the end cap inwardly of the lip into which the annular diaphragm can snap after being deformed as it passes through the annular lip in the mouth of the end cap to define said initial position of the end cap on the coupling body and to hold the diaphragm in a deformed state in engagement with the bottom of the slot to resist withdrawal of the end cap from the coupling body.
5. A tube coupling as claimed in any one of claims 1 to 4, wherein the annular slot tapers outwardly away from the lip into the end cap so that as the end cap is advanced along the coupling body past the diaphragm, the diaphragm can slide along and expand into the deepening part of the slot to reduce the deformity imposed on the diaphragm.
6. A tube coupling as claimed in claim 5, wherein the slot in the end cap at its deeper end has an extended deeper slot into which the diaphragm can extend in the advanced position of the end cap on the coupling body, the slot being sufficiently deep to accommodate the diaphragm without deformation.
7. A tube coupling as claimed in any one of claims 1 to 6, wherein the diaphragm is a single continuous diaphragm encircling the coupling body.
8. A tube coupling as claimed in any one of claims 1 to 6, wherein the diaphragm comprises a series of segments extending around the coupling body.
9. A tube coupling as claimed in any one of claims 1 to 8, wherein the annular diaphragm is formed on a separate insert ring mounted on the coupling body.
10. A tube coupling as claimed in claim 9, wherein the insert ring is a split ring mounted in a groove in the coupling body.
11. A tube coupling as claimed in any one of claims 1 to 10, wherein the coupling body is formed with an external upstanding annular abutment located beyond the diaphragm from the screw-thread on the coupling body to provide an end stop for restricting the extent to which the end cap can be screwed onto the coupling body to define said advanced position in which the end cap can be screwed to lock the tube in the collet.
12. A tube coupling as claimed in any one of claims 1 to 11, wherein the stop means in the coupling body to restrict movement of the collet when depressed into the coupling body comprise a sealing arrangement located in the coupling body for the tube.
13. A tube coupling as claimed in claim 12, wherein the sealing arrangement comprises a spacer ring encircling the throughway in the coupling body and an O-ring seal located between the spacer ring and a shoulder formed in the throughway, the inner end of the collet being engageable with the spacer ring to restrict entry of the collet into the coupling body.
14. A tube coupling comprising:
a coupling body having a throughway open at a first end;
a tubular end cap in screw-threaded engagement with the first end of the coupling body, the end cap being selectively movable between an initial position and an advanced position along the coupling body, the end cap having an interior surface comprising a tapering cam surface;
a collet at least partially disposed in the end cap so as to selectively bias against the tapering cam surface of the end cap;
a stop disposed in the coupling body, the stop restricting advancement of the collet into the end cap when the end cap is in the advanced position;
a flexible diaphragm extending between the coupling body and the end cap, the flexible diaphragm encircling one of the coupling body and the end cap; and an annular slot in the other of the end cap and coupling body in which the diaphragm is disposed when the end cap is in the initial position, the slot having a width which accommodates the travel of the end cap along the coupling body.
a coupling body having a throughway open at a first end;
a tubular end cap in screw-threaded engagement with the first end of the coupling body, the end cap being selectively movable between an initial position and an advanced position along the coupling body, the end cap having an interior surface comprising a tapering cam surface;
a collet at least partially disposed in the end cap so as to selectively bias against the tapering cam surface of the end cap;
a stop disposed in the coupling body, the stop restricting advancement of the collet into the end cap when the end cap is in the advanced position;
a flexible diaphragm extending between the coupling body and the end cap, the flexible diaphragm encircling one of the coupling body and the end cap; and an annular slot in the other of the end cap and coupling body in which the diaphragm is disposed when the end cap is in the initial position, the slot having a width which accommodates the travel of the end cap along the coupling body.
15. A tube coupling as claimed in claim 14, further comprising:
the diaphragm being formed on the coupling body; and a lip radially inwardly projecting from the interior surface of the end cap, the lip providing a restricted opening of smaller diameter than an outer diameter of the diaphragm, the annular slot being disposed on the interior surface of the end cap inward of the lip.
the diaphragm being formed on the coupling body; and a lip radially inwardly projecting from the interior surface of the end cap, the lip providing a restricted opening of smaller diameter than an outer diameter of the diaphragm, the annular slot being disposed on the interior surface of the end cap inward of the lip.
16. A tube coupling as claimed in claim 15, wherein the annular slot tapers outwardly away from the lip so that as the end cap is advanced along the coupling body over the diaphragm, the diaphragm can slide along and expand into the slot to reduce the deformity imposed on the diaphragm.
17. A tube coupling as claimed in any one of claims 14 to 16, wherein the diaphragm is a single continuous diaphragm encircling the coupling body.
18. A tube coupling as claimed in any one of claims 14 to 16, wherein the diaphragm comprises a series of segments extending around the coupling body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0221076.3 | 2002-09-11 | ||
| GBGB0221076.3A GB0221076D0 (en) | 2002-09-11 | 2002-09-11 | Improvements in or relating to tube couplings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2440564A1 CA2440564A1 (en) | 2004-03-11 |
| CA2440564C true CA2440564C (en) | 2010-04-13 |
Family
ID=9943866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2440564A Expired - Lifetime CA2440564C (en) | 2002-09-11 | 2003-09-10 | Improvements in or relating to tube couplings |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7032932B2 (en) |
| EP (2) | EP1657480B1 (en) |
| AU (1) | AU2003246038B2 (en) |
| CA (1) | CA2440564C (en) |
| DE (2) | DE60336351D1 (en) |
| ES (2) | ES2362793T3 (en) |
| GB (1) | GB0221076D0 (en) |
| HK (1) | HK1084719A1 (en) |
| NZ (1) | NZ528153A (en) |
Families Citing this family (57)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0209897D0 (en) | 2002-04-30 | 2002-06-05 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| JP2005172218A (en) * | 2003-11-21 | 2005-06-30 | Hama International:Kk | Pipe joint |
| TW200602577A (en) | 2004-04-22 | 2006-01-16 | Swagelok Co | Fitting for tube and pipe |
| US7203006B2 (en) * | 2004-08-26 | 2007-04-10 | Sun Long Optics Co., Ltd. | Chucking and focusing device for a telescope eyepiece and its production process |
| GB0504899D0 (en) * | 2005-03-09 | 2005-04-13 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| ITMI20051383A1 (en) * | 2005-07-20 | 2007-01-21 | Faster Spa | SAFETY DEVICE FOR ASSEMBLED PARTS WITH THREAD RELATIVE TO A QUICK COUPLING |
| DE202006006304U1 (en) * | 2006-04-18 | 2007-08-30 | Voss Automotive Gmbh | Connector for pipes, in particular of plastic |
| MX2009003037A (en) * | 2006-09-22 | 2009-07-22 | Eaton Corp | Male coupling for connecting to female threaded coupling. |
| US7568737B2 (en) * | 2006-09-22 | 2009-08-04 | Eaton Corporation | Male coupling for connecting to female threaded coupling |
| US8398124B2 (en) * | 2006-11-02 | 2013-03-19 | Mark A. Bennett | Pull-up by torque fitting |
| AU2007318437A1 (en) * | 2006-11-07 | 2008-05-15 | Yuk Nam Choi | Pipe coupling devices |
| GB0624784D0 (en) | 2006-12-12 | 2007-01-17 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| WO2008104562A1 (en) * | 2007-03-01 | 2008-09-04 | Georg Fischer Tpa Srl | Joint for connecting pipes |
| AU2008234410B2 (en) * | 2007-03-30 | 2012-06-07 | Sun Chan | Conduit joining apparatus |
| WO2008154076A1 (en) * | 2007-06-12 | 2008-12-18 | Cameron International Corporation | Connector system and method of connecting |
| DE112008002088T5 (en) | 2007-08-03 | 2010-09-09 | Swagelok Company, Solon | Ring clamp connection with torque-based mounting |
| GB0723646D0 (en) * | 2007-12-03 | 2008-01-16 | Guest John Int Ltd | Tube couplings |
| GB0809685D0 (en) * | 2008-05-28 | 2008-07-02 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| US20100171302A1 (en) * | 2009-01-05 | 2010-07-08 | Nibco Inc. | Push-twist connector |
| WO2010096672A1 (en) * | 2009-02-20 | 2010-08-26 | Swagelok Company | Conduit fitting with torque collar |
| US8960728B2 (en) | 2009-02-20 | 2015-02-24 | Swagelok Company | Conduit fitting with split torque collar |
| CN102472420B (en) * | 2009-07-08 | 2014-06-25 | 斯特恩科技股份有限公司 | Tube coupling |
| US8157294B2 (en) * | 2009-12-10 | 2012-04-17 | Masco Corporation | Glueless whirlpool fittings |
| US8403370B2 (en) * | 2009-12-17 | 2013-03-26 | Yuk Nam Choi | Pipe coupling device |
| US8833733B2 (en) | 2010-01-21 | 2014-09-16 | Automatic Switch Company | Valve connections |
| US20110204624A1 (en) * | 2010-02-25 | 2011-08-25 | Nibco Inc. | Universal connection socket |
| US8906167B2 (en) | 2010-04-28 | 2014-12-09 | Whirlpool Corporation | Slide assembly for a dishwasher rack |
| GB201010501D0 (en) * | 2010-06-22 | 2010-08-04 | Guest John Int Ltd | A tube coupling |
| US9958097B2 (en) | 2010-07-09 | 2018-05-01 | Swagelok Company | Conduit fitting with flexible torque collar |
| CN102330723A (en) * | 2010-07-13 | 2012-01-25 | 新秩序投资119股份有限公司 | Pipe fitting |
| GB2482175B (en) * | 2010-07-23 | 2016-01-13 | Agilent Technologies Inc | Fitting element with bio-compatible sealing |
| JP5805981B2 (en) * | 2011-04-14 | 2015-11-10 | 株式会社ブリヂストン | Joint structure, header base and header |
| JP5805980B2 (en) * | 2011-04-14 | 2015-11-10 | 株式会社ブリヂストン | Pipe fitting and piping header |
| GB201205575D0 (en) | 2012-03-29 | 2012-05-16 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| KR20140060880A (en) * | 2012-11-13 | 2014-05-21 | 디케이락 주식회사 | Tube connecter with connecting protrusion and check marking |
| CN103867820B (en) * | 2012-12-14 | 2016-12-21 | 林子棋 | The connection self-locking structure connected for pipeline |
| US10578235B2 (en) | 2013-03-26 | 2020-03-03 | Reliance Worldwide Corporation (Aust.) Pty. Ltd. | Tube coupling |
| JP5878143B2 (en) * | 2013-05-08 | 2016-03-08 | 日本ピラー工業株式会社 | Synthetic resin pipe fittings |
| KR101452357B1 (en) * | 2013-07-03 | 2014-10-22 | 디케이락 주식회사 | A Conduit Connecting Device |
| JP6240455B2 (en) | 2013-10-01 | 2017-11-29 | 日本ピラー工業株式会社 | Synthetic resin pipe fittings |
| GB201317952D0 (en) | 2013-10-10 | 2013-11-27 | Guest John Int Ltd | A connector for connecting to a tube |
| GB201317990D0 (en) | 2013-10-11 | 2013-11-27 | Guest John Int Ltd | A conncetor |
| US10006575B2 (en) | 2013-12-11 | 2018-06-26 | Nibco Inc. | Modular push-to-connect assembly |
| US9447906B2 (en) | 2013-12-11 | 2016-09-20 | Nibco Inc. | Self-locking push-to-connect insert |
| US9541228B2 (en) | 2013-12-11 | 2017-01-10 | Nibco Inc. | Push-to-connect fitting |
| WO2015089583A2 (en) | 2013-12-19 | 2015-06-25 | Gsa Industries (Aust.) Pty Ltd | Pipe connection fitting |
| US9777875B2 (en) | 2014-02-26 | 2017-10-03 | Nibco Inc. | Clam shell push-to-connect assembly |
| WO2015171998A2 (en) | 2014-05-09 | 2015-11-12 | Swagelok Company | Conduit fitting with components adapted for facilitating assembly |
| WO2015187958A1 (en) | 2014-06-04 | 2015-12-10 | Parker-Hannifin Corporation | Compression fitting with torque nut |
| DE102014108699A1 (en) | 2014-06-20 | 2015-12-24 | Alfred Kärcher Gmbh & Co. Kg | CLUTCH ASSEMBLY FOR SCREW COUPLING |
| CN105402384B (en) * | 2015-12-16 | 2018-05-29 | 力帆实业(集团)股份有限公司 | The connection structure and a kind of automobile of a kind of oil-cooled tube and oil cooler |
| WO2017106702A1 (en) * | 2015-12-18 | 2017-06-22 | Nelco Energy Services Llc | Non-preloaded threaded pipe connection for temporary high pressure piping |
| US10584814B2 (en) | 2016-03-23 | 2020-03-10 | Swagelok Company | Conduit fitting with stroke resisting features |
| CN110672177B (en) * | 2019-10-14 | 2020-11-27 | 山东和同信息科技股份有限公司 | NB-IoT Internet of things intelligent water meter |
| NL2024297B1 (en) | 2019-11-22 | 2021-08-23 | Wavin Bv | A pipe coupling for receiving, holding and releasing a pipe and a method of assembling a pipe coupling |
| CN112431654B (en) * | 2020-11-24 | 2022-10-04 | 江苏惠新知识产权服务有限公司 | Turbo-charging silencer of automobile engine |
| US11698153B2 (en) * | 2021-09-24 | 2023-07-11 | Caterpillar Inc. | Fluid joint assembly adjustable from primary to backup sealing state and fluid connector for same |
Family Cites Families (62)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2475741A (en) * | 1943-01-06 | 1949-07-12 | Robert A Goeller | Connector |
| US2452277A (en) * | 1945-05-10 | 1948-10-26 | George V Woodling | Tube coupling |
| US2640716A (en) * | 1948-12-28 | 1953-06-02 | Arthur L Bigelow | Tube coupling |
| US2728895A (en) * | 1954-10-04 | 1955-12-27 | Whitney Blake Co | Self-locking coupling device |
| NL107650C (en) * | 1956-05-28 | |||
| US3107108A (en) * | 1957-11-26 | 1963-10-15 | Whitney E Greene | Tube coupling |
| US2935299A (en) * | 1957-12-30 | 1960-05-03 | Jansen Gerhart | Clamp nut apparatus |
| US3180664A (en) * | 1961-07-20 | 1965-04-27 | Imp Eastman Corp | Ball pipe joint with composite ball member |
| US3233924A (en) * | 1963-04-18 | 1966-02-08 | Parker Hannifin Corp | High pressure coupling |
| BE656166A (en) * | 1963-11-26 | |||
| US3334661A (en) * | 1964-01-03 | 1967-08-08 | Kenneth A Milette | Pipe union |
| US3250550A (en) * | 1964-02-13 | 1966-05-10 | Gilbert T Lyon | Self-flaring tube coupling |
| FR1508220A (en) * | 1966-11-21 | 1968-01-05 | Moulages Ind Plasto | Quick coupling for flexible hoses |
| NO126755B (en) * | 1968-05-28 | 1973-03-19 | Raufoss Ammunisjonsfabrikker | |
| CH506743A (en) * | 1969-06-11 | 1971-04-30 | Schmid Kranz & Co Gmbh Zweigni | Pipe connection sleeve for the mechanically secured clamp fastening of smooth pipe ends - especially small-caliber steel pipes |
| US3834742A (en) * | 1971-02-05 | 1974-09-10 | Parker Hannifin Corp | Tube coupling |
| US3747964A (en) * | 1971-12-15 | 1973-07-24 | N Nilsen | Quick coupling and seal |
| FR2227483B1 (en) | 1973-04-24 | 1975-08-22 | Legris France Sa | |
| GB1520742A (en) * | 1975-07-30 | 1978-08-09 | Guest J D | Couplings for tubes |
| IL47642A (en) * | 1975-07-04 | 1978-07-31 | Plasson Maagan Michael Ind Ltd | Pipe coupling and split-ring useful therein |
| US3989283A (en) * | 1975-07-23 | 1976-11-02 | Genova, Inc. | Compression fitting |
| US4136897A (en) * | 1976-04-08 | 1979-01-30 | Parker-Hannifin Corporation | Coupling device for tubular members |
| US4062572A (en) * | 1976-08-30 | 1977-12-13 | Inner-Tite, A Division Of Yara Engineering Corporation | Transition fittings |
| US4188051A (en) * | 1977-04-22 | 1980-02-12 | Parker-Hannifin Corporation | Tube coupling |
| FR2394736A1 (en) | 1977-06-16 | 1979-01-12 | Cetri Sa | Tube coupling for fluid circuit - has shearable body with wedge surface which deforms lip to engage in tube surface |
| US4305606A (en) * | 1978-11-24 | 1981-12-15 | Societe Legris France S.A. | Quick-releasable connectors for flexible plastic pipes |
| US4253686A (en) * | 1979-04-10 | 1981-03-03 | Aitken W Sidney | Pipe coupling useful at high fluid pressures |
| FR2461186A1 (en) * | 1979-07-06 | 1981-01-30 | Legris | IMPROVEMENTS IN PIPE FITTINGS, IN PARTICULAR FOR HIGH PRESSURE FLUID PIPES |
| US4335908A (en) * | 1980-05-19 | 1982-06-22 | Burge Donald G | Push-in tube connector |
| US4298222A (en) * | 1980-07-23 | 1981-11-03 | Jaco Manufacturing Company | Tube coupling |
| SE455638B (en) * | 1982-08-27 | 1988-07-25 | Ekman K R | DEVICE IN A CONNECTOR UNIT WITH THE FIRST AND OTHER NUT FORMATED CONNECTOR PARTS AND SET FOR MANUFACTURING THE DEVICE |
| ES274252Y (en) * | 1983-08-05 | 1984-08-16 | Cuerda Zamora Pedro | COUPLING DEVICE WITH ROCKING RETAINING CLAWS |
| US4637636A (en) * | 1984-11-12 | 1987-01-20 | Guest John D | Tube couplings |
| US4655159A (en) * | 1985-09-27 | 1987-04-07 | Raychem Corp. | Compression pressure indicator |
| CH672898A5 (en) * | 1987-05-11 | 1990-01-15 | Praezisions Werkzeuge Ag | |
| US4867489A (en) * | 1987-09-21 | 1989-09-19 | Parker Hannifin Corporation | Tube fitting |
| JPH0633844B2 (en) * | 1987-09-29 | 1994-05-02 | ブリヂストンフロ−テック株式会社 | Pipe fitting |
| CA1311778C (en) * | 1988-05-12 | 1992-12-22 | Anthony L. Reese | Compression coupling |
| US4993755A (en) * | 1989-09-22 | 1991-02-19 | Master Industries, Inc. | Quick connect fitting |
| US5388866A (en) * | 1990-03-09 | 1995-02-14 | Lourdes Industries | High pressure coupling with provision for preventing separation of parts and with anti-galling provision |
| US5217261A (en) * | 1990-04-23 | 1993-06-08 | Aeroquip Corporation | Flareless compression fitting |
| JPH0439492A (en) * | 1990-05-31 | 1992-02-10 | Tokai Rubber Ind Ltd | Quick connector |
| US5362110A (en) * | 1991-02-25 | 1994-11-08 | Moeller Manufacturing Co., Inc. | Fluid coupling and fastener capture device |
| FR2689205B1 (en) * | 1992-03-30 | 1995-08-11 | Hutchinson | ADAPTER DEVICE FOR CONNECTING A TIP AND THE END OF A FLEXIBLE, PARTICULARLY A GAS FLEXIBLE. |
| US5593186A (en) * | 1993-07-20 | 1997-01-14 | Philmac Pty Ltd | Coupling for outer surface engagement of polymeric pipe |
| FR2710715B1 (en) * | 1993-09-29 | 1996-09-20 | Marc Jean Pierre | Self-locking lock for pipes. |
| FR2717883B1 (en) * | 1994-03-04 | 1996-06-14 | Hutchinson | Quick and watertight connection device for tubular pipes. |
| TW309581B (en) * | 1994-09-15 | 1997-07-01 | Environ Prod Inc | |
| US5466019A (en) * | 1994-09-26 | 1995-11-14 | Komolrochanaporn; Naris | Pipe coupling |
| JP3644786B2 (en) * | 1997-04-14 | 2005-05-11 | Ｓｍｃ株式会社 | Pipe fitting |
| IT1293211B1 (en) * | 1997-05-14 | 1999-02-16 | Irritec S R L | THREADED COUPLING DEVICE FOR PIPES. |
| US6095572A (en) * | 1998-01-20 | 2000-08-01 | Optimize Technologies, Inc. | Quarter turn quick connect fitting |
| GB9806642D0 (en) * | 1998-03-27 | 1998-05-27 | Guest John D | Improvements in or relating to tube coupling |
| US5957509A (en) * | 1998-10-16 | 1999-09-28 | Komolrochanaporn; Naris | Pipe coupling |
| US6302447B1 (en) * | 1999-06-11 | 2001-10-16 | Airdrome Parts Co. | Self-locking coupling device |
| EP1087168B1 (en) | 1999-09-27 | 2004-06-09 | Legris S.A. | A device for connecting a pipe to a conduit member |
| GB0103774D0 (en) * | 2001-02-15 | 2001-04-04 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| US6796586B2 (en) * | 2001-07-09 | 2004-09-28 | Twin Bay Medical, Inc. | Barb clamp |
| GB0126798D0 (en) * | 2001-11-07 | 2002-01-02 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| GB0209899D0 (en) | 2002-04-30 | 2002-06-05 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| GB0209897D0 (en) | 2002-04-30 | 2002-06-05 | Guest John Int Ltd | Improvements in or relating to tube couplings |
| US6905142B2 (en) * | 2002-09-25 | 2005-06-14 | Huck Patents, Inc. | Hydraulic coupling |
-
2002
- 2002-09-11 GB GBGB0221076.3A patent/GB0221076D0/en not_active Ceased
-
2003
- 2003-09-10 EP EP06003755A patent/EP1657480B1/en not_active Expired - Lifetime
- 2003-09-10 EP EP03255651A patent/EP1398559B1/en not_active Expired - Lifetime
- 2003-09-10 DE DE60336351T patent/DE60336351D1/en not_active Expired - Lifetime
- 2003-09-10 ES ES06003755T patent/ES2362793T3/en not_active Expired - Lifetime
- 2003-09-10 CA CA2440564A patent/CA2440564C/en not_active Expired - Lifetime
- 2003-09-10 DE DE60303890T patent/DE60303890T2/en not_active Expired - Lifetime
- 2003-09-10 ES ES03255651T patent/ES2256680T3/en not_active Expired - Lifetime
- 2003-09-11 US US10/660,099 patent/US7032932B2/en not_active Expired - Lifetime
- 2003-09-11 AU AU2003246038A patent/AU2003246038B2/en not_active Expired
- 2003-09-11 NZ NZ528153A patent/NZ528153A/en not_active IP Right Cessation
-
2006
- 2006-05-24 HK HK06105988.7A patent/HK1084719A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NZ528153A (en) | 2004-07-30 |
| DE60303890D1 (en) | 2006-05-04 |
| ES2256680T3 (en) | 2006-07-16 |
| EP1657480B1 (en) | 2011-03-09 |
| HK1084719A1 (en) | 2006-08-04 |
| US20040061329A1 (en) | 2004-04-01 |
| AU2003246038B2 (en) | 2008-08-21 |
| AU2003246038A1 (en) | 2004-04-01 |
| CA2440564A1 (en) | 2004-03-11 |
| DE60303890T2 (en) | 2006-11-16 |
| US7032932B2 (en) | 2006-04-25 |
| EP1657480A1 (en) | 2006-05-17 |
| EP1398559A1 (en) | 2004-03-17 |
| DE60336351D1 (en) | 2011-04-21 |
| GB0221076D0 (en) | 2002-10-23 |
| EP1398559B1 (en) | 2006-03-08 |
| ES2362793T3 (en) | 2011-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2440564C (en) | Improvements in or relating to tube couplings | |
| US7425022B2 (en) | Tube couplings | |
| US4685706A (en) | Releasable push-to-connect tube fitting | |
| EP1359363B1 (en) | Tube coupling | |
| US6880865B2 (en) | Tube couplings | |
| US7581763B2 (en) | Connector device for pipes | |
| US5370423A (en) | Tube couplings | |
| KR960007436B1 (en) | Pipe joint | |
| US5443289A (en) | Tube couplings | |
| JPH11311385A (en) | Pipe fitting | |
| IL105065A (en) | Coupling | |
| JP2000504092A (en) | Splined safety lock with elastic retaining ring | |
| GB2336638A (en) | Push-fit tube coupling | |
| JP4660216B2 (en) | Pipe fitting | |
| JPH11201347A (en) | Pipe joint | |
| JP4255949B2 (en) | Quick fitting | |
| JPH07127779A (en) | Connecting device for bellows pipe | |
| EP0750154B1 (en) | Tube coupling | |
| JP2006009997A (en) | Tube fitting | |
| JP2004100720A (en) | Pipe joint | |
| JP2003028364A (en) | Insert type pipe joint | |
| JP2002213664A (en) | Pipe joint | |
| JP3705506B2 (en) | Corrugate pipe fitting sleeve | |
| JP2001153282A (en) | Flexible tube fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20230911 |